JPH0568629A - Internal pressure adjusting device for air mat - Google Patents

Abstract

PURPOSE:To simply adjust and set air pressure in an air tube to air pressure being suitable for a user. CONSTITUTION:A shoulder air mat main body, a waist air mat main body, and a leg air mat main body are constituted of the respective independent air tubes. The device is provided with a pressure sensor 3 for detecting an ascent value of internal pressure of each air tube, respectively at the time when a user lies on his back in a state that the air tubes of the shoulder air mat main body, the waist air mat main body, and the leg air mat main body are set to prescribed pressure, respectively. Also, this device is provided with a control means 6 for adjusting pressure of each air tube of the shoulder air mat main body, the waist air mat main body, and the leg air mat main body in accordance with a set level set by the user, based on data detected by the pressure sensor 3.

Description

Detailed Description of the Invention

[0001]

The present invention relates to an air mat,
The present invention relates to an internal pressure adjusting device for an air mat for adjusting an air pressure suitable for a user.

[0002]

2. Description of the Related Art Conventionally, it is possible to select a harder or softer bedding at the time of purchase according to taste, but after the purchase, the ones that change the hardness of the bedding itself are except the air type and the leaf spring type. There was no. Here, the leaf spring type changes the hardness by changing the setting of the leaf spring based on the bending of the recumbent spine, and the air type simply adds to the air tube. It was designed to adjust hardness by applying pressure and pressure.

[0003]

However, in the case of the above-mentioned conventional example, it is doubtful that the leaf spring type has a preferable hardness when used in a supine posture.
In addition, since the air type was simply adjusting the hardness by pressurizing and depressurizing the air tube at the time of use, the range of choice is too wide, and the optimum hardness according to the user. Was questionable.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide an internal pressure adjusting device for an air mat which can be easily adjusted and set to an air pressure suitable for a user. To provide.

[0005]

The air mat internal pressure adjusting device of the present invention is an air mat in which a shoulder air mat main body 1a, a waist air mat main body 1b, and a leg air mat main body 1c are each constituted by an independent air tube 2. , Shoulder air mat body 1a, waist air mat body 1
b, an air mat body 1a for the shoulder, an air mat body 1b for the waist when the user sleeps in a supine position with the air tubes 2 of the air mat body 1c for the legs set to constant pressures,
Based on the pressure sensor 3 that detects an increase in the internal pressure of each of the air tubes 2 of the leg air mat body 1c, and based on the data detected by the pressure sensor 3, the shoulder pressure sensor is set according to the set pressure level set by the user. Air mat body 1
a, waist air mat body 1b, leg air mat body 1c
In the present invention, the control means 6 for adjusting the pressure of each of the air tubes 2 is provided, and by adopting such a configuration, the problems of the above-mentioned conventional example are solved and the present invention is realized. Has achieved the purpose of.

[0006]

[Function] A shoulder air mat body 1a, a waist air mat body 1b, each of which is composed of an independent air tube 2,
After the air mat body 1c for legs is set to an initial value of a constant pressure (constant pressure of 10 g / cm ² or less), the user sleeps in a supine posture, the air mat body for shoulders 1a, the air mat body for waists 1b, and the legs The pressure sensor 3 detects an increase in the internal pressure of each of the air tubes 2 of the air mat body 1c, and based on the data detected by the pressure sensor 3, the control means 6 responds to the set pressure level set by the user. By adjusting the pressure of each air tube 2 of the air mat main body 1a for shoulders, the air mat main body 1b for waists, and the air mat main body 1c for legs, an optimum shoulder air mat main body 1a and waist air mat main body 1b according to the weight of the user. The pressure of each air tube 2 of the leg air mat body 1c can be adjusted.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the accompanying drawings. The air mat 8 is a shoulder air mat body 1a,
Waist air mat body 1b, leg air mat body 1c 3
Two air mat main bodies 1 are connected to each other via bent portions 9, and an air tube 2 is provided in each air mat main body 1. A control box 10 as shown in FIG. 2 is buried in the waist air mat main body 1 at the center,
The operation unit 11 on the surface of the control box 10 is exposed to the outside. In the control box 10, as shown in FIGS. 3, 4 and 5, three solenoid valves 12 (a shoulder solenoid valve 12a, a waist solenoid valve 12b, a leg solenoid valve 12c), a pressure sensor 3,
A printed wiring board incorporating a control means 6 including a pressure reducing solenoid valve 13, an air pump 14, a battery 5, and a microcomputer is internally provided. Here, the three solenoid valves 12 and the pressure reducing solenoid valve 1
The pressure sensor 3 and the air pump 14 are connected to each other through a common pipe 16. And three solenoid valves 1
2 and pressure reducing solenoid valve 13 and air pump 14
The pressure reducing means 4 is configured. Battery 5 has three solenoid valves 1
2. It serves as a power source for electric devices incorporated in the air mat 8 such as the pressure-reducing solenoid valve 13, the air pump 14, and the control means 6. Shoulder, waist, and leg hoses 17 are connected to the three solenoid valves 12 of the shoulder solenoid valve 12a, the waist solenoid valve 12b, and the leg solenoid valve 12c, and each hose 17 is for the shoulder. , The air tubes 2 of the three air mat main bodies 1 for the waist and legs are connected to each other. The operation unit 11 includes a power switch 19, a hard / soft adjustment switch 18, various operation switches such as a pressure holding switch 20 for switching between an automatic mode and a manual mode, a site setting switch 21, a pressure set switch 22, a time set switch 23, and the like. A set pressure display portion for each part, a display portion 24 for displaying other information, and the like are provided.

FIG. 1 shows a flow chart of the present invention.
Here, in the present invention, the control means 6 composed of a microcomputer is normally set to be turned off, and the microcomputer 7 is provided at every predetermined time (for example, 24 hours) preset by the timer 7 with or without the microcomputer. It is set to turn on the control means 6 consisting of. In this way, when the control means 6 is in the off mode and the pressure holding automatic control time comes after a certain period of time, the control means 6 is put in the on mode and it is checked whether or not the pressure holding switch 20 is in the on state. Here, if the pressure holding switch 20 is off, the control means 6 shifts to the off mode. If the pressure holding switch 20 is turned on, the zero point correction operation of the pressure sensor 3 is started. After the zero correction operation of the pressure sensor 3, the pressure measurement operation by the pressure sensor 3 is started. As a result of the pressure measurement by the pressure sensor 3, when the pressure is within the set pressure range (when the difference from the set pressure does not exceed the dead zone), the control means 6 including the microcomputer shifts to the off mode. On the other hand, as a result of pressure measurement by the pressure sensor 3,
When it is out of the set pressure range (when the difference from the set pressure exceeds the dead zone), the control means 6 drives the pressurizing / depressurizing means 4 to pressurize or depressurize and set the air tube 2. When the internal pressure in the air tube 2 is returned to the set value and returned to the set value, the automatic pressure holding control operation is completed, so the control means 6 shifts to the off mode. Since the contents of the volatile memory in the microcomputer are lost when the microcomputer as the control means 6 is turned off, the set pressure is stored in the microcomputer as a non-volatile memory for backup (rewritable). It should be saved in. Figure 1
In FIG. 3, the stabilizing circuit 30 is for stabilizing the battery voltage to the control means 6, and 31 is a voltage detection means for detecting the voltage of the battery 5 and sending a signal to the control means 6. ..

By the way, in the present invention, the set pressure region is experimentally obtained as follows. That is, the set pressure area of the air pressure is determined by experimentally obtaining the difference in the air pressure, which can be perceived to be sensually different from the air pressure (hardness). Is called the dead band.
This dead zone is a region where the air pressure is small (<50 g / cm ² ).
Area where air pressure is high (> 50g / cm)
^{In 2} ), it becomes larger. That is, it has been confirmed by experiments that at a high pressure of about 100 g / cm ² , even if the air pressure is changed, the change in hardness felt by a person at that time is small. And
The set pressure of the set pressure level 1 is 15 g / cm ² , the set pressure of the set pressure level 2 is 30 g / cm ² , the set pressure of the set pressure level 3 is 45 g / cm ² , and the set pressure of the set pressure level 4 is 60 g / cm 2. ² , set pressure of set pressure level 5 80g
/ Cm ² , set pressure of set pressure level 6 is 100 g / cm
^{2. If} the set pressure of the set pressure level 7 is 120 g / cm ² , the dead zones of the set pressure level 1 to the set pressure level 3 are ± 10 g / cm ² , and the set pressure level 4 to the set pressure level 7 are Each dead band is ± 15 g / cm ² . That is, for example, in the case of the set pressure level 2, the set pressure is 30
is a g / cm ^2, since dead width of ± 10 g / cm ^2, the range of 20g / cm ² ~40g / cm ² is set pressure area at the time of setting the air pressure to the set pressure level 2. Therefore, in the state where the air pressure is set to the set pressure level 2, the control means 6 becomes the ON mode at the above-mentioned constant time intervals, and the pressure detected by the pressure sensor 3 is 20 g / cm.
When in the range of ² to 40 g / cm ² is the control means 6 goes to OFF mode, <20g / cm ² or> 40 g
In case of / cm ² , pressurizing / depressurizing means 4 is controlled by the control means 6.
Is driven to pressurize or depressurize and return the air tube 2 to the set value.

Here, the pressurizing / depressurizing means 4 pressurizes or reduces the pressure.
When performing pressure control, the input of pressure sensor 3 is an air pump.
14 pulsation, it usually varies, and
Due to the effect of resistance, the actual pressure inside the air tube 2 should be
Since it is difficult to adjust the set pressure accurately, the present invention
The set pressure of the air pressure obtained from the dead band described above.
For adjustment within the area, which is smaller than the above-mentioned dead width
A dead zone is provided, and the pressure is reduced by the pressure / pressure reducing means 4.
When adjusting the force, the pressure is determined by this dead band for adjustment.
It is considered that the set value has been reached within the set pressure range for adjustment.
Then, the pressurization and depressurization are stopped. This adjustment
Useless width is ± 3 to ± 5 g / cm²What to set
Is. For example, the dead zone for adjustment is ± 5 g / cm²And
In this case, if the set pressure level is 2, the dead range for adjustment is ± 5 g /
cm²Therefore, 25 g / cm ²~ 35g / cm²of
Adjustable set pressure range whose range is determined by the adjustable dead zone
Becomes Therefore, set the air pressure to the set pressure level 2.
In this state, the control means 6 is turned on at regular intervals.
And the pressure detected by the pressure sensor 3 is 20 g /
cm²~ 40g / cm²Control means if in the range
6 goes to off mode, <20g / cm²Or> 4
0 g / cm²In case of
Drive stage 4 to pressurize or depressurize 25 g / cm²~ 3
5 g / cm²Set value when it becomes the set pressure area for adjustment in the range
Driving of the pressurizing / depressurizing means 4 is stopped.
Then, the control means 6 returns to the off mode.

In the present invention, the shoulder air mat body 1
a, waist air mat body 1b, leg air mat body 1c
Is adjusted to the hardness according to the user. That is, each of the air tubes 2 of the shoulder air mat body 1a, the waist air mat body 1b, and the leg air mat body 1c has an initial value of a constant pressure (the initial value of the constant pressure is 10
g / cm ² or less), the user sleeps in a supine posture, and the internal pressure of each air tube 2 of the shoulder air mat body 1a, the waist air mat body 1b, and the leg air mat body 1c is measured. In this case, the rise value of the internal pressure of each air tube 2 is determined by the shoulder air mat body 1a and the waist air mat body 1
b. Since it occurs as a result of the depression of each air tube 2 of the leg air mat main body 1c, it can be seen that this increase in internal pressure is in correlation with the weight of the user.
FIG. 8 is a graph showing the relationship between the increased value of the internal pressure and the weight of the waist air mat main body 1b. By the way, Japanese people live in the tatami culture and tend to prefer harder bedding in general, and there is a background that the combination of tatami mats and futons causes the waist to sank with little depression. .. Therefore, in the air mat 8 of the present invention, the air pressure inside the air tube 2 is adjusted so that the waist (or buttocks) is depressed at the beginning of initial use so that the depression is close to the futon. That is, the air tubes 2 of the shoulder air mat body 1a, the waist air mat body 1b, and the leg air mat body 1c when the user sleeps in the supine posture.
The pressure sensor 3 detects an increase value of the internal pressure of each air tube 2 obtained by measuring the internal pressure of the device, and sends this data as a signal to the control unit, so that the user can set the target pressure level of the air pressure (above). If any of the set pressure levels 1 to 7 of the selected air pressure is selected), the shoulder air mat main body 1a is controlled by the control means 6 including the microcomputer corresponding to the set pressure level. The air pressure of each of the air tubes 2 of the waist air mat main body 1b and the leg air mat main body 1c is adjusted to an optimum set pressure level according to the user. As an example, the air tubes 2 of the shoulder air mat body 1a, the waist air mat body 1b, and the leg air mat body 1c are each 10 g /
cm ² and then a user sleeps in a supine position,
When the internal pressures of the air tubes 2 of the shoulder air mat body 1a, the waist air mat body 1b, and the leg air mat body 1c are measured, the air tubes of the shoulder air mat body 1a, the waist air mat body 1b, and the leg air mat body 1c are measured. 2 is 20 g / cm ² , 25 g / cm ² and 13 g, respectively.
Was / cm ² . As a result, the shoulder air mat body 1
a, waist air mat body 1b, leg air mat body 1c
The internal pressure of each air tube 2 is increased by 10 g / cm ² ,
It is found to be 15 g / cm ² , 3 g / cm ² .
On the other hand, when the initial value is set at 10 g / cm ² , the internal pressure of each air tube 2 of the shoulder air mat main body 1a, the waist air mat main body 1b, and the leg air mat main body 1c is increased and used at each set pressure level. When a person sleeps in a supine position, the relationship between the hardness of the shoulder air mat main body 1a, the waist air mat main body 1b, and the leg air mat main body 1c and the pressure to be corrected so as to be felt to the same degree is obtained by an experiment, and the following is obtained. Since the data as shown in Table 1 above was obtained, it is registered in the control means 6 in advance, and when the user selects an arbitrary set pressure level based on this data, according to the selected set pressure level. Each air tube 2 of the shoulder air mat body 1a, the waist air mat body 1b, and the leg air mat body 1c is controlled by the control means 6 including a microcomputer.
Is adjusted to an optimum air pressure for each set pressure level according to the user, and when the user selects the set pressure level 3 now, the shoulder air mat main body 1a and the waist air mat main body 1b are selected. The internal pressure of each air tube 2 of the leg air mat body 1c is increased by 10 g / cm ² or 15 g / cm ² .
² , 3 g / cm ² shoulder air mat body 1
a, each air tube 2 of the waist air mat main body 1b is 50 g / cm ² which is +5 g / cm ² higher than the set pressure of the set pressure level 3, which is 45 g / cm ^2, and the air tube of the leg air mat main body 1c. 2 is set pressure level 3
The setting pressure is 45 g / cm ^2, and by doing so, the user can make the shoulder air mat main body 1a, the waist air mat main body 1b, the leg air mat main body 1
Each of the air tubes 2 of c can be used by feeling that they have substantially the same hardness.

[0012]

[Table 1]

As described above, the internal pressure of each air tube 2 of the shoulder air mat main body 1a, the waist air mat main body 1b, and the leg air mat main body 1c is adjusted and used. The pressure holding operation of the air tubes 2 of the three mat bodies 9 for shoulder, waist, and leg after use is sequentially performed for each part. For example, the control means 6 including a microcomputer is set at predetermined time intervals (for example, 24 hours) preset by the timer 7.
Is turned on, first, the pressure holding operation of one part (for example, the mat body 9 for the shoulder) is performed as described above, and when this is finished, the other part (for example, the mat body 9 for the waist) is next.
The pressure holding operation is performed as described above, and when this is completed, the pressure holding operation of the remaining portion (for example, the leg mat body 9) is performed as described above. At this time, for example, when pressurizing and depressurizing the shoulder mat body 9, the shoulder solenoid valve 12a is opened and pressurized by the air pump 14, or the pressure reducing solenoid valve 13 is opened and depressurized. .. Similarly, when pressurizing and depressurizing the waist mat body 9, the waist electromagnetic valve 12b is opened to pressurize by the air pump 14, and the depressurizing electromagnetic valve 13 is opened to depressurize. When the leg mat body 9 is pressurized and depressurized, the leg solenoid valve 12c is opened and pressurized by the air pump 14, and the depressurizing solenoid valve 13 is opened to depressurize.

FIG. 6 shows a flow chart of the pressure holding operation of one portion of the present invention when the pressure is reduced. That is, when the pressure measurement by the pressure sensor 3 is completed, the pressure reducing operation is started, the pressure reducing solenoid valve 13 is turned on, and the solenoid valve 12 is turned on after 0.5 seconds. Next, after 0.5 seconds, the pressure is measured by the pressure sensor 3, and based on the pressure Pm measured by the pressure sensor 3, the pressure Pr in the tube 2 is calculated by the correction by the line resistance. Next, a value obtained by subtracting the set pressure from the pressure Pr in the tube thus obtained is obtained (that is, the value of A represented by Pr-set value = A is obtained). And the dead range for adjustment is now ± 5g
/ Cm ² and A> 5 g / cm ² , the pressure has not been reduced to the set pressure range for adjustment, so pressure measurement is performed again (note that if this loop continues for 10 minutes, abnormal operation will occur). It is judged and shifts to the abnormal processing). On the other hand, in the case of A <-5 g / cm ² , it means that the pressure has been reduced beyond the set pressure range for adjustment, and therefore the pressure operation is started.
When −5 g / cm ² <A <5 g / cm ² , the pressure reducing solenoid valve 13 is turned off, and 0.5 seconds later, the pressure is measured to obtain the measured pressure Pm. In this case, the pressure Pr in the tube is Pr = Pm. Then, the value obtained by subtracting the set pressure from the pressure Pr in the tube is obtained again. Here, when A> 5 g / cm ² , the pressure has not been reduced to the set pressure range for adjustment, so the pressure reducing solenoid valve 13 is turned on again and the above operation is repeated. This loop is repeated 3 times. On the other hand, in the case of A <-5 g / cm ² , it means that the pressure has been reduced beyond the set pressure range for adjustment, and therefore the pressure operation is started. ^{Then, -5g / cm 2 <A <} 5g / cm 2
Then, the solenoid valve 12 is turned off to complete the partial pressure reducing operation.

FIG. 7 shows a flow chart at the time of pressurizing the pressure holding operation of one portion of the present invention. That is, when the pressure measurement by the pressure sensor 3 is completed, the pressurizing operation is started, the air pump 14 is turned on, and the solenoid valve 12 is turned on after 0.5 seconds. After 0.5 seconds, the pressure sensor 3 measures the pressure, and based on the pressure Pm measured by the pressure sensor 3, the line resistance, the fluctuation of the power supply voltage,
The pressure Pr in the tube 2 is calculated by making a correction based on the pump capacity or the like. Next, the value obtained by subtracting the set pressure from the pressure Pr in the tube thus obtained is obtained (that is, the value of A represented by Pr-set value = 3 is obtained). Then, when the adjusting dead width as now ± 5 g / cm ^2, since in the case of A <-5g / cm ² is not pressurized to adjusting set pressure region, and performs pressure measurement again. On the other hand, when A> 5 g / cm ² , it means that the pressure has been exceeded beyond the set pressure range for adjustment, and the pressure reducing operation is started. When −5 g / cm ² <A <5 g / cm ² , the air pump 14 is turned off, and 0.5 seconds later, the pressure is measured to obtain the measured pressure Pm. In this case, the pressure Pr in the tube is Pr = Pm. Then, the value obtained by subtracting the set pressure from the pressure Pr in the tube is obtained again. Here, in the case of A <−5 g / cm ² , since the pressure has not been increased up to the set pressure range for adjustment, the air pump 14 is turned on again and the above operation is repeated. This loop is repeated 3 times. On the other hand, when A> 5 g / cm ² , it means that the pressure has been exceeded beyond the set pressure range for adjustment, and the pressure reducing operation is started. Then, when -5 g / cm ² <A <5 g / cm ² , the solenoid valve 12 is turned off, and the partial pressure operation is completed.

When the pressure holding switch 20 is turned off to switch to the manual mode, the control means 6 does not turn on even when the set time is reached, and therefore the air pump 14 is driven after a certain time. If there is no problem and the sound of the air pump 14 is annoying, it is preferable to switch to the manual mode in this way.

[0017]

According to the present invention, as described above, the shoulder air mat main body, the waist air mat main body, and the leg air mat main body are each constituted by an independent air tube. When the user lays down in the supine position with the air tubes of the waist air mat body and leg air mat body set to constant pressure, the air tubes of the shoulder air mat body, waist air mat body, and leg air mat body respectively Based on the pressure sensor that detects the rising value of the internal pressure and the data detected by this pressure sensor, the shoulder air mat body, waist air mat body, and leg air mat body corresponding to the set pressure level set by the user. Since the control means for adjusting the pressure of each air tube is provided, each air tube is configured by an independent air tube. After setting the shoulder air mat body, waist air mat body, and leg air mat body to the initial values of constant pressure, the user sleeps in a supine position, and the shoulder air mat body, waist air mat body, leg air mat body The rise value of the internal pressure of each of the air tubes is detected by the pressure sensor, and based on the data detected by this pressure sensor, the control means corresponds to the set pressure level set by the user, and the shoulder air mat main body and waist By adjusting the pressure of each air tube of the air mat main body and leg air mat main body, the optimal shoulder air mat main body, waist air mat main body, leg air mat main body air tubes in the supine state according to the weight of the user It can be adjusted to the pressure.

[Brief description of drawings]

FIG. 1 is a block diagram of the present invention.

FIG. 2 is a partially cutaway perspective view of the above air mat.

FIG. 3 is a plan sectional view of the control box of the above.

FIG. 4 is a front view of the control box of the above.

FIG. 5 is a front sectional view of the control box of the above.

FIG. 6 is a flowchart at the time of depressurizing the pressure holding operation of the above.

FIG. 7 is a flowchart at the time of pressurizing the pressure holding operation of the same.

FIG. 8 is a graph showing the relationship between the internal pressure increase value and body weight in the waist air mat main body portion.

[Explanation of symbols]

 1a Shoulder air mat body 1b Waist air mat body 1c Leg air mat body 2 Air tube 3 Pressure sensor 6 Control means

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hiroo Fukui 1048, Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Works Co., Ltd.

Claims (1)

[Claims] 1. An air mat in which a shoulder air mat body, a waist air mat body, and a leg air mat body are each constituted by an independent air tube, wherein an air tube for a shoulder air mat body, a waist air mat body, and a leg air mat body. A pressure sensor that detects the rise in the internal pressure of each of the air tubes of the shoulder air mat body, the waist air mat body, and the leg air mat body when the user lays down in a supine position with each set to a constant pressure. Based on the data detected by the pressure sensor, a control means is provided to adjust the pressure of each air tube of the shoulder air mat body, the waist air mat body, and the leg air mat body according to the setting level set by the user. A device for adjusting the internal pressure of an air mat, which is characterized in that